By not including Costa in their squad, Chelsea have ensured he will not become cup-tied, meaning he could play in the competition for another team in the second part of the season.

Despite being named in Chelsea’s Premier League squad, Costa has not played in any of their league games to date, his place taken by £58 million ($75.1 million, 63.1 million euros) record signing Alvaro Morata.

Chelsea will also face Roma and Azerbaijani newcomers Qarabag in their group.

Manchester United included Zlatan Ibrahimovic in their squad despite his current unavailability as he recovers from a serious knee injury.